Tension device for loom



UNITED STATES PATENT OFFICE."

GEoRGE c. KoEsr R, or PATERSON, NEW JERSEY.

TENSION DEVICE FOR LOOM-SHUTTLES.

SPECIFICATION forming partof Letters Patent No. 558,083,,dated April 14, 1896.

Application filed December 7, 1895. serial No. 571,448. (No model.)

To all whom it may concern:

Be it known that I, GEORGE CHRISTIAN KOEsTER,of the city of Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Tension Devices for Loom-Shuttles, of which the following is a specification.

The object of my invention is to provide a spring fora ribbon loom-shuttle in that class of shuttles Where a lever is pressed against the quill containing the silk, the tension of the spring to be regulated without removing or bending the spring, the device from its simplicity of construction and ease of operation to facilitate and regulate the taking of the silk from the quillin the operation of weaving.

In that class of shuttles now in use the lever is pressed against the bottom of the quill by a flat spring, one end of which is secured in the shuttles by means of a pin, the free end being forked to receive the arm of the lever. To regulate the tension of the spring now in use, it is taken out and bent more or less, or it is bent without taking it from the shuttles. It is difiicult to regulate the tension of it as desired and often has to be manipulated several times before the desired degree of tension is obtained, while the tension of my improved tension-spring is regulated almost instantly, thus saving time and labor.

My invention consists in the employment of a supplemental spring guide or strip beneath the spring proper and of a sliding connection for holding down or releasing the spring, as required.

In the accompanying drawings, in which similar letters of reference indicate like parts, Figure 1 represents a shuttle provided with a quill, a lever, and my improved tensionspring adapted to operate said lever. Fig. 2 represents the tension-spring, guiding-strip, and sliding connecting-piece, being a side View thereof; and Fig. 3 is a top view of spring, slide, and pin for securing spring in shuttle.

In the drawings, A is the spring; B, the guiding-strip; O, the sliding connection; D, the lever; E, the quill; F, the shuttle-body,

and H the pin for securing the spring in shnt- 5o tle=body.

Fig. 3 shows a spring and guide riveted together at the end where the securing-pin is located.

I do not wish to confine myself to a guide riveted to the spring, as a separate and independent guiding-strip may be inserted under the ordinary old spring, and a loop or other suitable sliding connecting device may be secured to said spring and guide to regulate the tension of the spring without departing from the essential principle of my invention,which is the employment of a spring, a guide under the same, and a sliding connection to hold down or release the spring, as desired.

The old spring device is not exact enough, and especially when heavy dyed silk is in use; but my improved spring may be regulated to a nicety, according to the quality of the silk.

In the drawings the sliding connection shown is a loop, which encircles the spring and the guide, and by sliding the same backward or forward the tension is regulated by holding down or releasing the spring A,which presses the lever D upward against the bottom of the quill E.

It is obvious that the regulation of the tension of the spring A is greatly facilitated by the use of the guide B and sliding connection 0, it being but the work of a moment to adjust the sliding connection for that purpose.

With this description of my invention, what I claim is- In a ribbon-shuttle tension device the combination with the shuttle-body provided with a quill of a lever, a spring secured in. said shuttle and adapted to press the lever upward against the quill, a guiding-strip secured in said shuttle beneath said spring and a sliding connection embracing both spring and strip and adapted to hold down said spring to, or release said spring from, said guiding-strip, constructed substantially as shown and described.

GEORGE C. KOESTER. Witnesses:

EMMET OBRIEN, WM. M. DREW. 

